Jameco-electronics Rabbit 3000 Uživatelský manuál stáhnout pdf (Strana 299)

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290 Rabbit 3000 Microprocessor

The stack protection registers are listed in Table B-12, Table B-13, and Table B-14.

Table B-12. Stack Limit Control Register

Stack Limit Control Register (STKCR) (Address = 0x0444)

Bit(s) Value Description

7:1 These bits are reserved and should be written with zeros.

0 Disable stack-limit checking.

1 Enable stack-limit checking.

Table B-13. Stack Low Limit Register

Stack Low Limit Register (STKLLR) (Address = 0x0445)

Bit(s) Value Description

7:0

Lower limit for stack limit checking. If a stack operation or stack-relative

memory access is attempted at an address less than {STKLLR, 0x10} a stack

limit violation interrupt is generated.

Table B-14. Stack High Limit Register

Stack High Limit Register (STKHLR) (Address = 0x0446)

Bit(s) Value Description

7:0

Upper limit for stack limit checking. If a stack operation or stack-relative

memory access is attempted at an address greater than {STKHLR, 0x0EF} a

stack limit violation interrupt is generated.

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